we had lead 100 years in gasoline and were burnig it into the air we breathe, so good choice to cut down on your lead intake. Lead would deform too fast, this is ZINC.
Google zinc collar and it is the same stuff used in cheap jewelery.

zinc collar.jpg (10.86 KiB) Viewed 2030 times

To lighten the mood, I made you a nice gif animation of a funny picture I just found
enjoy and pass on (hope they show animated gifs here)

we had lead 100 years in gasoline and were burnig it into the air we breathe, so good choice to cut down on your lead intake. Lead would deform too fast, this is ZINC.
Google zinc collar and it is the same stuff used in cheap jewelery.

zinc collar.jpg

To lighten the mood, I made you a nice gif animation of a funny picture I just found
enjoy and pass on (hope they show animated gifs here)